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filters: all

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This commit is contained in:
harttle
2016-06-18 23:18:46 +08:00
parent b478c798fd
commit 4595e2872e
21 changed files with 627 additions and 211 deletions
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render.js
+34 -26
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@@ -1,6 +1,6 @@
const lexical = require('./lexical.js');
const error = require('./error.js');
const Exp = require('./expression.js');
const assert = require('assert');
function stringify(val) {
if (typeof val === 'string') return val;
@@ -8,43 +8,51 @@ function stringify(val) {
}
function factory(Filter, Tag) {
function renderTemplates(templates, scope) {
if (!scope) throw new Error('unable to evalTemplates: scope undefined');
var html = '';
assert(scope, 'unable to evalTemplates: scope undefined');
var html = '', partial;
templates.some(template => {
if (scope.get('forloop.skip')) return true;
if (template.type === 'tag') {
if (template.name === 'continue') {
scope.set('forloop.skip', true);
return true;
}
if (template.name === 'break') {
scope.set('forloop.stop', true);
scope.set('forloop.skip', true);
return true;
}
html += template.render(scope, this.register);
} else if (template.type === 'html') {
html += template.value;
} else if (template.type === 'output') {
var val = evalFilter(template.value, scope);
html += stringify(val);
switch (template.type) {
case 'tag':
partial = renderTag(template, scope, this.register);
if(partial === undefined) return true;
html += partial;
break;
case 'html':
html += template.value;
break;
case 'output':
var val = evalOutput(template, scope);
html += stringify(val);
}
});
return html;
}
function evalFilter(str, scope) {
if (!scope) throw new Error('unable to evalFilter: scope undefined');
var filters = str.split('|');
var val = Exp.evalValue(filters.shift(), scope);
return filters
.map(str => Filter.construct(str))
function renderTag(template, scope, register) {
if (template.name === 'continue') {
scope.set('forloop.skip', true);
return;
}
if (template.name === 'break') {
scope.set('forloop.stop', true);
scope.set('forloop.skip', true);
return;
}
return template.render(scope, register);
}
function evalOutput(template, scope) {
assert(scope, 'unable to evalOutput: scope undefined');
var val = Exp.evalExp(template.initial, scope);
return template.filters
.reduce((v, filter) => filter.render(v, scope), val);
}
return {
renderTemplates, evalFilter
renderTemplates, evalOutput, renderTag
};
}